Question

Write an applet program that would enter two variables in a text field and perform the following operations when calculate button is pressed. Design a friendly interface. Have buttons for all operations including exit.

Addition

Subtraction

Multiplication

Division

Answer 1

Code:

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import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class Q2 extends Applet implements ActionListener
{
    TextField num1 = new TextField(10);
    TextField num2 = new TextField(10);
    TextField res = new TextField(10);

    Label fir = new Label("FIRST NO:");
    Label sec = new Label("SECOND NO:");
    Label answer = new Label("Answer:");
    Button a = new Button("Addition");
    Button s = new Button("Subtraction");
    Button m = new Button("Multiplication");
    Button d = new Button("Division");

    public void init()
    {
        num1.setForeground(Color.RED);
        num2.setForeground(Color.RED);
        add(fir);
        add(num1);
        add(sec);
        add(num2);
        add(res);
        add(answer);
//        add(sum);
//        add(diff);
//        add(mul);
//        add(mul);

        add(a);add(s);add(m);add(d);
        a.addActionListener(this);
        s.addActionListener(this);
        m.addActionListener(this);
        d.addActionListener(this);
    }
    public void paint(Graphics g) {
        this.fir.setLocation(50,50);
        this.num1.setLocation(150,50);
        this.sec.setLocation(50,100);
        this.num2.setLocation(150,100);

        this.a.setLocation(20,150);
        this.s.setLocation(100,150);
        this.m.setLocation(200,150);
        this.d.setLocation(300,150);

        this.answer.setLocation(50, 200);
        this.res.setLocation(150, 200);


    }
    public void actionPerformed(ActionEvent e)
    {
        
        if (e.getSource() == a)
        {
            int n1 = Integer.parseInt(num1.getText());
            int n2 = Integer.parseInt(num2.getText());
            res.setText(" " + (n1 + n2));
        }
        else if (e.getSource() == s)
        {
            int n1 = Integer.parseInt(num1.getText());
            int n2 = Integer.parseInt(num2.getText());
            res.setText(" " + (n1 - n2));
        }
        else if (e.getSource() == m)
        {
            int n1 = Integer.parseInt(num1.getText());
            int n2 = Integer.parseInt(num2.getText());
            res.setText(" " + (n1 * n2));
        }
        else if(e.getSource() == d)
        {
            int n1 = Integer.parseInt(num1.getText());
            int n2 = Integer.parseInt(num2.getText());
            res.setText(" " + (n1 / n2));
        }
    }
}

Output:

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Applet Viewer: Q2 Applet DL FIRST NO: SECOND NO: 2 Addition! Subtraction」 Mu ation] Division Answer: 12 Applet started.

Please comment if you need any help.